Detonating door-fastening device



A. A. KELLLY.

DETONATING DOOR FASTENING DEVICE. WPuclmoNl FLED MN.15.1921.

1,403,502. Patented Jan.17,1922.

@neuneu UNITED STATES PATENT orifice,

ARTHUR A. KELLEY, OF SPOKANE, WASHINGTON, .ASSIGNOR 03? ONE-HALF TO JAMES K. HIGGINS, OF SPOKANE, VJASHINGTON.

DETONATING DOOR-FASTENING DEVICE.

Application led January 15, 1921.

To all whom it' may concern:

Be it lrnoivn that l, lari-run A. lnLLnY, a citizen of the Dominion of Canada, residing at Spokane, in Spokane County and State of lVashington, have invented certain new and useful improvements in Detonating Door-Fastening Devices, of which the following is specification.

My present invention relates to an improved detonating door faste; ing of the portable `ype, adapted as a` burglar alarm for use in fastening closed door or Window, for the combined functions of securing `the door or Window, and providing an alarm in case of burglary or surreptitious opening of the door or Window.

rFhe primary object of uhe invention is the provision of a simple and compactly arranged, portable device that may be used by travellers or others for securing a door or Window, and which, ivhile comparatively inexpensive in cost of production is simple in construction and operation. reliable, and a comparatively perfect mechanism for performing its required functions.

The subject metter of the inv ation involves the utilization of a door securing device of that type in which a hammer is released to explode a detonating cap or cartridge, upon the attempt to open the door or Window With which the device is used, and even after the detonation or alarm, the door is held in fastened position except against breaking doivn thereof.

The invention consists in certain novel combinations and arrangements of parts as will be hereinafter more fully described and claimed.

ln the accompanying drawings l have illustrated one complete example of the physical embodiment of my invention as now in actual use, in which the parts are combined and arranged according to the best inode I have thus far devised for the practial application of the principles of my iuvention.

Figure l is a perspective view of a device enibodying the novel features of my invention, the parts being shown in -noperative or day-time position.

Figure 2 is a plan view of the device in open position, as in Figure l, with the slidable, dispensable cover or lid removed therefrom to expose the interior construction of the device.

Specification of Letters Patent.

Patented Jan. 17,1922.

serial No. 437,556.

Figure 3 is a vertical, sectional, longitudinal view at line 3-3 of Figure 4 Withthe parts open and inoperative.

Figure l is a transverse sectional vieiv at line 4 4 of Figure 3, With the hammer blade in firing position.

Figure 5 is a top plan vievv of the device in operative position showing its relation to the door, door jamb and door frame.

ln the preferred form of the invention as illustrated in the drawings, in Figure 5 l have shown the device in its relation to the usual hinged door l, door frame Q, and door jamb 3, the door being fastened or secured by the device embodying the invention `-which is secured to the door frame, and the carrierbolt of the fastening device is holding the door against the jamb 3 to prevent opening of the door.

The portable fastening device is compact in form and suiiiciently small in site to be carried about the .nei-son and com arises i 7 metallic locking plate or fastening blade 4 having a pair of spurs or teeth 5 adapted to be forced into the material of the door frame,y and a shoulder 6 on the plate adjacent these spurs is adapted to bear against the edge of the door frame, thus anchoring the blade or plate and its connected device firmly and securely to the door frame.

il carrier-bolt or hollow blocl; l is hinged at one end of the fastening plate, by a strong hinge joint 8, and this carrier bolt, which is of comparatively heavy Weight and strength of mater Vl for performing its required functions is fashioned with side Walls 9, 9, projecting from thevbody of the bolt. These Walls are provided with complementary slots l0, l0, similar to open bayonet-slots near one end of the bolt, and near the other end thereof a pair of laterally extending exterior pins ll provided,

ln connection with the carrier bolt l utilize a slidable, dispensable, cover plate l2, for releasing a detonating device, the plate being slidable relative to the carrier bolt and provided with open slots 13 inintegral side lugs projecting therefrom and axially alined pins le projecting to the interior thereoi1 from the side flanges le. The slotted flanges 1.3 and the iianges le are spaced apart, in pairs, to act as guides and slip over the free edges of the Walls of the carrier block, and the co-acting pins and slots on the block or bolt and cover lid, permit a limited sliding movement oi the cover lid on the bolt, which when the cover lid is released as will be described, will terminate in a casting-oil or snappingptl movement of the lid with relation to the carrier bolt.

lVithin the side walls of the carrienbolt is provided a reversible, spring pressed, hammer blade 15, made up of suitable metal, with its tip end 15 projecting slightly beyond the carrier-bolt which is notched at 7 for insertion of the finger nail, or a tool to swing the hammer blade to operative position on its pivot bar. rlhe hammer-blade has a detonating head 16 and is pivotedon the transversely extending bar i7 fixed in the side walls of the carrier bolt, while a spring 18 coiled about the bar hasone end 19 bearing on the top face of the blade and its opposed end 20 bearing on the tace ot the carrier bolt, as shown in Figure 2. In this manner the blade is held down flat seen in full lines Figure 2, or when swung over to dott-ed position in said ligure, and the slide cover plate released, the coiled spring will violently throw over the hammer blade to detonate a cap or cartridge retained onthe anvil 21.

The dispensable cover plate is attached to the carrier bolt by means of a chain 22 in order that it may not be misplaced or lost when thrown from the bolt under action.

In loading the device and preparing it for use, the haminenblade, after the cover plate has been removed, is swung over or reversed on its pivot against the tension of the spring 8 to dotted position in Figures 2 and 3. The blade is held in this position while the cover-plate, grasped in the right hand, is applied to the carrier-bolt and the pins 1L1 of the cover-plate are inserted in the open bayonet slots 10 of the carrier-bolt. The slotted end of the coveiplate is now brought down over and parallel with the carrier-bolt so that the open slots 13 of the cover-plate will slide over the pins 11 of the bolt, as the cover-plate ismoved tothe right (see Figure 1). By moving the cover plate to dotted position or' Figure 3 the plate is set or cocked for firing, and in this position one end of the plate projects (as indicated in Figures 8 and. 5) beyond the end of the carrier bolt. The carrier bolt is now ready to be turned on its hinge 8 and folded over to dotted position of Figure 3, and the blade 4 is applied to the door trame 2 as in Figure 5, the door is closed, and the carrier bolt is turned `to closed or folded position, as in Figure 5. Il pressure is applied to the dool` from the exterior, the iorce exerted will result in sliding the cover plate its projected distance on the bolt, and this movement is sui'iicient to tree the cover plate ot its pin and slot connections. This movement trees the cover plate and releases the tension of the spring 18, whereupon the hammer blade, under spring pressure is swung on its pivot, throwing oil the covenplate and causing the hammer `blade to strike the cap or cartridge to detonate the latter, thus providing an au dible alarm. The cover-plate is retained by its chain ready for re-setting. The carrier` bolt, however, remains in fastened position, and although the door may be moved slightly, 'the pressure of the door on the bolt serves only to more securely hold the door by the resistance et the bolt, as the pressure thereon is sustained by the hinge joint, and the pull on the fastening blade 4l, which has its teeth embedded in the door frame, is not sui'licient to release the blade from the door trame, under ordinary conditions.

In Figure 1 the cover plate is shown in safety position with the small slots 23 oi the flanges 13 engaging pins 211 on the exterior of the carrier-bolt, and while in this position the device may be retained for use when required, and after application to the door frame, the cover plate may be slid Jrom saitety to cocked position without disengagement from the carrier bolt.

What I claim as new and desire to secure by Letters Patent is 1. The combination with a fastening plate Y of a hollow hinged, carrier-bolt, a reversible, spring pressed hammer-blade pivoted in the carrier bolt, and a slidable and dispensable releasing cover-plate on said carrier bolt ac tuated by pressure thereon, for the purpose described.

2, The combination with a fastening plate, of a hollow, hinged, carrier bolt, a reversible spring pressed. hammer-blade pivoted in the carrier bolt/,a slidable, dispensable releasing cover-plate on said carrier bolt, actuated as described, and means on the bolt and cover-plate co-acting to hold the latter in saiety position.

3. The combination with a fastening plate, ol' a hollow, hinged carrienbolt hav* ing complementary slots in its side walls, and complementary lateral pins at its opposite end, of a reversible, spring pressed ham mer-blade pivoted in the carrier-bolt, and a slidable, dispensa-ble releasing cover-plate having pins and slots complementary to the slots and pins or the carrier-bolt, for the purpose described.

In testimony whereof I ailix my signature.

ARTHUR A. KELLEY. 

